Quick filters:
Page 3 of 4
Clusters of cells Stock Photos and Images
RF2A1EB9E–cells and virus, 3d rendered cancer cell, Clusters of cells, T-lymphocytes attack a migrating cancer cell, Cancer cell attacked by lymphocytes
RMPG3HP2–. Mosses with a hand-lens; a non-technical handbook of the more common and more easily recognized mosses of the north-eastern United States. Mosses. MOSSES WITH A HAND-LENS 193 Inflated, applied to the alar cells of leaves when enlarged much beyond the size of the neighboring cells. (Fig. 19.) Involucre, the circle of single or united bracts surrounding the perianth in the Hepatics. (See Marchantia.) InUorescence, often applied to the clusters of reproductive organs. lulaceous, smooth, slender and cylindric; like a catkin or a worm. Lamellae, thin sheets or plates of tissue; e. g., the plates
RF2A1EB8R–cells and virus, 3d rendered cancer cell, Clusters of cells, T-lymphocytes attack a migrating cancer cell, Cancer cell attacked by lymphocytes
RF2A1JGMR–3d rendered cancer cell, Clusters of cells, T-lymphocytes attack a migrating cancer cell, Cancer cell attacked by lymphocytes, Macrophage attack of th
RMRHKWFP–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 220 DAVID R. WALTERS. FIGURE 1. Aggregates of fat-body cells which formed after 2 hours of rotation in 40 per cent plasma. (Maximal aggregation.) FIGURE 2. Same, in 20 per cent plasma. (Moderate aggregation.) FIGURE 3. Same, in 10 per cent plasma. (Partial aggregation.) FIGURE 4. Unaggregated cells in Weevers's solution. Black bar represents 4 mm; all Figures at the same magnification. menced, the suspension became less turbid. Tiny clusters of cells formed and gradually coalesced until maximal aggregation was attained in th
![. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 391 posed of three cells arranged in clover-leaf fashion. The spore clusters are usually very dense and vary in size from a pin- head's width to three-quarters inch broad. The leaf under the spores colors black, so that the groups can readily be seen from the upper surface of the leaf. Cluster cups and summer spores are not known for this rust. Rust of sedges [Puccinia caricis (Sghum.) Reb.]. This is an exceedingly common rust on many Minnesota sedges. The summer and winter spores are produced on the sedge plant and the clus Stock Photo](https://c8.alamy.com/comp/PG4EH2/minnesota-plant-diseases-plant-diseases-minnesota-plant-diseases-391-posed-of-three-cells-arranged-in-clover-leaf-fashion-the-spore-clusters-are-usually-very-dense-and-vary-in-size-from-a-pin-heads-width-to-three-quarters-inch-broad-the-leaf-under-the-spores-colors-black-so-that-the-groups-can-readily-be-seen-from-the-upper-surface-of-the-leaf-cluster-cups-and-summer-spores-are-not-known-for-this-rust-rust-of-sedges-puccinia-caricis-sghum-reb-this-is-an-exceedingly-common-rust-on-many-minnesota-sedges-the-summer-and-winter-spores-are-produced-on-the-sedge-plant-and-the-clus-PG4EH2.jpg ". Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 391 posed of three cells arranged in clover-leaf fashion. The spore clusters are usually very dense and vary in size from a pin- head's width to three-quarters inch broad. The leaf under the spores colors black, so that the groups can readily be seen from the upper surface of the leaf. Cluster cups and summer spores are not known for this rust. Rust of sedges [Puccinia caricis (Sghum.) Reb.]. This is an exceedingly common rust on many Minnesota sedges. The summer and winter spores are produced on the sedge plant and the clus Stock Photo")
RMPG4EH2–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 391 posed of three cells arranged in clover-leaf fashion. The spore clusters are usually very dense and vary in size from a pin- head's width to three-quarters inch broad. The leaf under the spores colors black, so that the groups can readily be seen from the upper surface of the leaf. Cluster cups and summer spores are not known for this rust. Rust of sedges [Puccinia caricis (Sghum.) Reb.]. This is an exceedingly common rust on many Minnesota sedges. The summer and winter spores are produced on the sedge plant and the clus
RM2AWWRD8–The microscope and its revelations . robable, therefore, that its presence indisease is rather to be considered as favoured by thechanged state of the fluids, which the disease induces (eitheran acid or a fermentible state of the contents of the stomachhaving been generally found to exist in the cases in which theplant has been most abundant), than to be itself the occasionof the disease, as some have supposed. The Sarcina presentsitself in the form of clusters of adherent cells arranged insquares, each square containing from 4 to 64, and the numberof cells being obviously multiplied by duplic
RMPFYM54–. Fresh-water biology. Freshwater biology. THE FRESH-WATER ALGAE 149 104 (103, 105, 106) Cells single, spherical, or oval. Dictyosphaerium Nageli. Chromatophore single, parietal. Reproduction by internal division. Fig. 160. Dictyosphaerium ptdchellum Wood. X S7o. (Original.) 105 (103, 104, 106) Colonies much as in Dictyosphaerium except that the cells are in clusters of four which are held together by the rem- nants of the mother-membrane. . Tetracoccus West Some regard this as a young stage in Dictyosphaerium. 106 (103, 104, 105) Cells clustered, grape-like, imbedded in the rather firm, often
RM2AGAF5P–. Ants; their structure, development and behavior. lood, transformingthem and returning them to the circulation in such a form that theycan be absorbed and excreted by the Malpighian vessels (Cuenot).Some authors are of the opinion that these pericardial cells also giverise to the amoebocytes. that they constitute, in other words, a hasmato-poetic organ. The oenocytes are glandular cells which arise in seg-mental clusters from the ectoderm of the embryo just behind the trachealinvaginations. In the ants these cells are very small and in the adultscattered about among the fat cells. They are ve
RMPFK7EW–. The cytoplasm of the plant cell. Plant cells and tissues; Protoplasm. Fig. 113. — Cells of stipe of Laminaria flexicaulis. Bouquet crystals formed by the pre- cipitation of iodide by cresyl blue in the vacuoles. P, phaeoplast. lo, fat globule. (After Mangenot).. Fig. 114. — Epidermal cells of sepals. Pigment in the vacuoles, partly in solution, partly crystallized. 1-2 Del- phinium. 1, D. Ajacis; pigment blue, clusters of needle-shaped crystals. 2. hort. var. with dark blue flowers; long, entangled needle-shaped crystals. 3, Verbena hybrid; large sphaerocrystals.. Please note that these imag
RM2AFM6H3–. The Bible and science. Fig. 26.—Vertical section of flower of hypericum, showing sepals, petals, stamens,ovary and styles. The formation of the male element begins as alittle cellular projection. The cells composing thismultiply, the mass grows larger, and then begins toshow signs of differentiation. In its body larger cellsappear, which form separate clusters, each surroundedby smaller cells, which form a distinct covering for it.Within these large cells the pollen is developed. The ovule, or female element, likewise begins as asmall cellular projection, the cells of which multiplyuntil it
RMPFYM4E–. Fresh-water biology. Freshwater biology. 123 (122) Chromatophores many, parietal Chlorobotrys Bohlin. Cells spherical, in a gelatinous matrix, as in SphaerocysHs, but the chlorophyll in many parietal discs. Fig. 168. Chlorobotrys regularis Bohlin. X 300. (After West.) 124 (121) Cells not spherical 125 125 (126) Cells crescent-shaped Kirchneriella Schmidle. Cells in' clusters, as in SphaerocysHs, but strongly crescent-shaped. In reproduction internal division takes place trans- versely and the four or eight daughter cells are set free by the breaking of the cell wall. Several species occur in
RM2AJE3PY–Hooper's physician's vade mecum, or, A manual of the principles and practice of physic . dtogether, or in round or oval clusters,* like large granule-cells. The subjoinedengraving, from a paper by Mr. Paget, inthe London Medical Gazette, 1850, shows the appearance of a smallartery under this fonn of degeneration. 351. The effect of this deposit of oil-globules is, that the even outlineof the vessels is exchanged for a knotted appearance, and that their properstructures gradually waste and disappear, so that the smaller vesselsdilate into minute aneurismal pouches. The proper vascular struc-tur
RMPFK7EP–. The cytoplasm of the plant cell. Plant cells and tissues; Protoplasm. Fig. 114. — Epidermal cells of sepals. Pigment in the vacuoles, partly in solution, partly crystallized. 1-2 Del- phinium. 1, D. Ajacis; pigment blue, clusters of needle-shaped crystals. 2. hort. var. with dark blue flowers; long, entangled needle-shaped crystals. 3, Verbena hybrid; large sphaerocrystals.. Fig. 115. — Mycelium of Eremothecium Ashbyii. a, vacuole with flavin in solution; b, vacuole with flavin crystals; gl, lipide granules. first. This latter is also obtained when neutral red is reduced in an acid medium. F
RM2AGA1BW–. The eclectic guide to health; or, Physiology and hygiene ... gs, placed one above another, withthe open part behind. These ringskeep the trachea open. The bronchialtubes are similar to the trachea instructure, but they are smaller andhave thinner walls. The air-cellshave extremely thin membranous walls,which separate the air within them fromthe blood in the capillaries of the lungs.There are many millions of cells, sothat their entire surface for the absorp-tion of the air is very great. Fig. 41shows how the bronchial tubes end in clusters of air-cells.The lining of the air-passages is very
RMPFYM4K–. Fresh-water biology. Freshwater biology. 123 (122) Chromatophores many, parietal Chlorobotrys Bohlin. Cells spherical, in a gelatinous matrix, as in SphaerocysHs, but the chlorophyll in many parietal discs. Fig. 168. Chlorobotrys regularis Bohlin. X 300. (After West.) 124 (121) Cells not spherical 125 125 (126) Cells crescent-shaped Kirchneriella Schmidle. Cells in' clusters, as in SphaerocysHs, but strongly crescent-shaped. In reproduction internal division takes place trans- versely and the four or eight daughter cells are set free by the breaking of the cell wall. Several species occur in
RM2AKFK3Y–The art of taming and educating the horse : with details of management in the subjection of over forty representative vicious horses, and the story of the author's personal experience : together with chapters on feeding, stabling, shoeing, and the practical treatment for sickness, lameness, etc: with a large number of recipes . ed in pul-monary affections. The windpipe (trachea), after entering thechest, divides into the bronchia or bronchial tubes. These divideand subdivide into smaller tubes, finally terminating in the aircells. The lungs are made up of clusters of those cells ; of a largema
RMPG4AJ0–. Elements of botany. Botany; Botany. Fig. 11.â Section through Exterior Part of a Grain of Wheat, c, cuticle or outer layer of bran ; ep, epidermis ; m, layer beneath epidermis ; qu, sch, layers of hull next to true seed-coats ; br, n, seed-coats ; XI, layer containing â grains of proteid material; st, cells of the albumen, filled with starch. 32. Absorption of Starch from the microscope, using a medium power, soaked beans and the cotyledons from seedlings that have been growing for three or four weeks. Stain the sec- tions with iodine solution, and notice how completely the clusters of starc
RM2AWMMPG–The problem of age, growth, and death; a study of cytomorphosis, based on lectures at the Lowell Institute, March 1907 . d to ex-plain to- you, and which they long retain. Meanwhile,as development progresses, all the remaining cells—all those not part of these clusters—pursue theirproper careers, become differentiated ; but the cells ^ In birds, although closely related to reptiles, the relations are less clear thanin turtles. Germ cells in an early stage (chick of two days incubation with26-30 primitive segments) occur in the rudiment of the wall of the intestine(splanchnopleure), as they do
RMPG411J–. The essentials of botany. Botany. PHANEROGAMIA. 217 generally called—are loose cones generally crowded into considerable clusters. Each cone consists of a stem upon which are many flattish stamens, each bearing two pollen- sacs (Fig. 120). 462. The pollen-cells are roundish, and covered by a. Fig. 122.—a ripe cone of a Fine, partly cut away to show the position of the seeds, g A,e, scale from a young;cone, upjier side sho'*ing two ovules (enlarged); B, the same when mature, showing: two winged seeds, ch. Each seed-coat has a small pore, M, through which the first root will grow in germinati
RM2AFTE46–. Dearborn's guide through Mount Auburn : with seventy-six engravings for the benefit of strangers desirous of seeing the clusters of monuments with the least trouble ; with the established rules for the preservation of the cemetery, purchase of lots, and other concerns ... 32 TREMONT OR STRANGERS TOMB. LOT 324, CHESTNUT AVENUE. Ovnied by the Proprietors of the Tremonl House, Boston; built in1833, of a pentagonal form, one side being occupied by the descendingentrance steps, and on each of the olher four sides, are three rows othorizontal cells, having three cells each, making 36 m all: if the
RMPFYMAE–. Fresh-water biology. Freshwater biology. Fig. 98. Meridion constriclum Ralfs. X 300. Smith.) (After SS (49) Valves without transverse costae. Family Fragilaeiaceae . 56 Cells of much the same structure as Dialoma. Transverse striations composed of separate dots; with or without raphe and end nodules. 56 (S7, 58) Cells very slender, not united in bands, either free or attached at one end, forming clusters on higher algae. Synedra Ehrenberg. Fig. 99. Synedra salina W. Smith. X 588. (Original.) Fragilaria Lyngbye. Sfi S7 (56, 58) Cells forming bands or zig-zag chains.. Fragilaria is a common ge
![. The Quarterly journal of the Geological Society of London. theshales of Forfarshire be proved, there is no doubt that they are theova of batrachians closely allied to the Ranidce or Frog tribe. The fossil eggs occur in clusters blended with the foliage of ap^parently fluviatile plants. Their forms are in many instances welldefined, and the polygonal depressions or cells left by the bursting * Manual of Elementary Geology, 3rd edition, p. 344. 1852.] MANTELL ON SUPPOSED FOSSIL OVA. 107 and removal of the ova are distinctly shown; and they entirely corre-spond with those in the recent carboniz Stock Photo](https://c8.alamy.com/comp/2AGDPRD/the-quarterly-journal-of-the-geological-society-of-london-theshales-of-forfarshire-be-proved-there-is-no-doubt-that-they-are-theova-of-batrachians-closely-allied-to-the-ranidce-or-frog-tribe-the-fossil-eggs-occur-in-clusters-blended-with-the-foliage-of-apparently-fluviatile-plants-their-forms-are-in-many-instances-welldefined-and-the-polygonal-depressions-or-cells-left-by-the-bursting-manual-of-elementary-geology-3rd-edition-p-344-1852-mantell-on-supposed-fossil-ova-107-and-removal-of-the-ova-are-distinctly-shown-and-they-entirely-corre-spond-with-those-in-the-recent-carboniz-2AGDPRD.jpg ". The Quarterly journal of the Geological Society of London. theshales of Forfarshire be proved, there is no doubt that they are theova of batrachians closely allied to the Ranidce or Frog tribe. The fossil eggs occur in clusters blended with the foliage of ap^parently fluviatile plants. Their forms are in many instances welldefined, and the polygonal depressions or cells left by the bursting * Manual of Elementary Geology, 3rd edition, p. 344. 1852.] MANTELL ON SUPPOSED FOSSIL OVA. 107 and removal of the ova are distinctly shown; and they entirely corre-spond with those in the recent carboniz Stock Photo")
RM2AGDPRD–. The Quarterly journal of the Geological Society of London. theshales of Forfarshire be proved, there is no doubt that they are theova of batrachians closely allied to the Ranidce or Frog tribe. The fossil eggs occur in clusters blended with the foliage of ap^parently fluviatile plants. Their forms are in many instances welldefined, and the polygonal depressions or cells left by the bursting * Manual of Elementary Geology, 3rd edition, p. 344. 1852.] MANTELL ON SUPPOSED FOSSIL OVA. 107 and removal of the ova are distinctly shown; and they entirely corre-spond with those in the recent carboniz
RM2AKH7HF–An American text-book of genito-urinary diseases, syphilis and diseases of the skin . Fig. 227 —Sivont-i-liunls. The gland proper consists of lobules or clusters of epithelial cells seated upona basement membrane. The outer cells near the basement membrane arecylindrical and of much the same form as those of the rete, while fartherinward they become larger and polyhedral, and are more or less filled withfat, which increases the nearer the center is approached. The cavities of theacini empty into a common gland-cavity filled with remnants of epithelial. Fig. 228.—sb.g, sebaceous glands; ep, epi
RM2AKNXGH–American practice of surgery : a complete system of the science and art of surgery . vascular and the cells composing it are large, round,spindle-like, or cylindrical in shape; they are derived from the proliferationof the connective tissue or perithelium forming the adventitia of the vessels. TUMORS AND TUMOR FORMATION 339 Thus, larger or smaller cell clusters are found grouped around tlie v(^ssels, theintervening spaces being filled with connective or nuicoid tissue, ordinary sarcomacells, or a finely granular debris (Fig. 104). The perithelial sarcomata are found in the kidneys, suprarenals
RM2AG9A2Y–. A Reference handbook of the medical sciences : embracing the entire range of scientific and practical medicine and allied science. with colloid sub-stance similar to thatfound within the vesicles.Wolfler has describedthe gland as consisting ofa cortical portion in whichthe development is incom-plete, the epithelial cellsbeing arranged in solidelongated clusters or col-umns, and a medullaryportion where the glandis fully developed, and allthe cells are arranged toform vesicles. The exist-ence of a limited numberof epithelial columns inthe medullary part of thegland, regarded by Vir-chow as ev
RM2AKNY7E–American practice of surgery : a complete system of the science and art of surgery . rcomata of Definitely Organoid Type.—In this group we i^lace all those sarco-mata that, from the peculiar arrangement of their cells, remind us somewhat ofon organ. Thus, the cells may be aggregated into definite clusters or nests,surrounded by connective tissue (alveolar sarcoma); others have a tubular apjieai-ancc not unlike that of a gland (tubular sarcomata); still others have a stratifiedappearance recalling the skin or a lining membrane. The type is not necessarilymaintained throughout, it should be rema
RM2AN5K0E–Brain surgery . he remaining extent ofthe specimen the scalp is absent and the connective-tissue mass referred to is the outermost layer. Sec-tions from the region of the specimen where the scalpis attached show the appearances in Fig. 33. Thescalp (a) with its clusters of fat cells and obliquely cuthair follicles covers and partly surrounds a bit ofdamaged cortex (c). The scalp shows atrophic changesof a moderate degree and the attachment to the brainis rather a loose one. The brain, in this particularpart of the specimen at any rate, simply lies against TREPHINING FOR EPILEPSY. 103 the scalp
RM2AFM7HR–. The Bible and science. FiG. 24.—Part of fern-leaf, bearing clusters of spore-cases. tiated into cells of the root, of the stem, and of theleaves. In mosses they are differentiated in this manner—roots, stem, and leaves being all different, but stillthey are composed only of cells. In ferns we have some of the cells uniting so asto form vessels, but still we have no such differentia-tion of the reproductive apparatus as in the exogensand endogens. In lycopods or club mosses, those trailing plantswhich we see so commonly on Highland moors, there G 82 PEOTHALLIUM IN LYCOPODS. is tlie same alter
RM2AWDFE9–Glimpses of the animate world; or, Science and literature of natural history, for school and home . s its eggs anddies. These eggs are in clusters, which when magnifiedappear like a fragment of honey-comb, with from fifty toone hundred and fifty cells. They are deposited in thewater, or as close to it as possible. In wet seasons thewater rises and floats the eggs, producing an abundant har-vest ; but in dry seasons many fail to reach the water, andso perish. 5. When first hatched in the water, they are very small,and remarkably active. They get all the food necessaryfor their sustenance from t
RM2AGAXKE–. The butterflies of the eastern United States; for the use of classes in zoology, and private students. paleyellow. The fulvous spots are a marginal row on bothwings and in the discal cells. The marginal spots are nearly round on theFig. 44. ^ fore wings, but on the hind wings theyare blunt conical,the points inward.Those in the cellsof the fore wingsare two clusters, Melitsea Phaeton (natural size). ^^ ^f three at the end, and the otherof two in the middle; and there is a cluster of fouron the hind wings. There may be all of these present,or they may vary from this to none. There are also tw
RM2AFY9EP–. A treatise on the nervous diseases of children, for physicians and students. Fig. 41.—Diffuse Neuroglia Sclerosisof the Cortex in Epilepsy (afterChaslin).. Fig. 42.—Various Phases of the Earlier Stages of the Degeneration of the GanglionCells. The thin lines enclosing the cells w and u represent the pericellular spaces;the cells x and y show the earliest stages, w and s later stages, and k shows theultimate destruction of the whole of the ganglion-cell body, leaving nothing but thenucleus lying in an empty space. (Van Gieson.) EPILEPSY. 79 neuroglia tissue ; clusters of an increased number o
RM2AG1DEC–. Field and woodland plants. seeded berrieswhich are first red, andthen nearly black. TheGuelder Rose, while stillin full leaf, is often veryheavily laden with itsbright red, semi-trans-parent berries ; and theviolet fohage of theDogwood is inter-mingled ^ith clusters ofhttle berry-like drupeswhich, at first green,have now changed to a rich purple-black. Then there is theSpindle Tree, with its pretty red lobed capsules which split, whenripe, at its angles, disclosing as many cells as there are lobes (usiiallyfour), each with a single seed enclosed in an orange jacket. Occa-sionally we meet wi
RM2AGB0NX–. A treatise on the nervous diseases of children : for physicians and students. Fig. 39.—Diffuse Neuroglia Sclerosisof the Cortex in Epilepsy (afterChaslin).. Fig. 40,—Various Phases of the Earlier Stages of the Degeneration of the GanglionCells. The thin lines enclosing the cells w and u represent the pericellular spaces ;the cells x and y show the earliest stages, w and s later stages, and k shows theultimate destruction of the whole of the ganglion-cell body, leaving nothing but thenucleus lying in an empty space. (Van Gieson.) EPILEPSY. 77 neuroglia tissue; clusters of an increased number
RM2AJ08G2–Journal of comparative neurology . ain surrounded by cells of the root mass {R.M.), and the fasciculus solitariusappears in two clusters of fibers {Fas.Sol.), a more dorsal representing the facialand glossopharyngeal portion and a ventral consisting of ascending fibers of thevagus root. This figure, as well as the following, extends ventrad to show therelation of the sensory centers to the motor column (FT), and the visceral motornucleus {Nuc.vis.vi.). The root fibers of the vagus enter in figure 48, and in thefollowing figure a few descending root fibers can be recognized {Fas.Sol.). Fig. 50
RM2AN5YJH–Anatomy, physiology and hygiene for high schools . he tubes and ramify into fine branches in the cortex.These branches end in fine clusters of capillaries known asglomeruli. From each of these clusters a vein issues. Eachcluster of capillaries, or glomerulus(Latin glomus, a ball of cotton ),is suiTounded by the closed, dilatedend of a tuhule ( small tube ). Thewhole structure, the cluster of ves-sels projecting into the closed endof a tubule, is known as a Malpighian(after Malpighi, who first describedit) capsule. The wall of a tubule consists ofa single layer of epithelial cells,mostly cubica
RM2AJ0YTB–The Encyclopaedia Britannica; .. A dictionary of arts, sciences and general literature . Saxifraga (fig. 34).tomain their greatest diameter, consist of four guard-cells; two Equisetum the stomata, which are about yto^^ ^ »n inch. Fig. 33. Fig. 34. , Flo. 33.—Epldemils of the garden Balsam (.Baltamina liortentU), showing stomati St, of an elliptical form.FlQ. S4.—Epidermis of leaf of Saxifraga sarmtntota. showing clusters of stomata s, s, surrounded by large epidermal cells e, t. The cells among which tha stomata occur are very email. of which are arched and thick at their outer convex margin.
RM2AGB0E4–. A treatise on the nervous diseases of children : for physicians and students. Fig. 40,—Various Phases of the Earlier Stages of the Degeneration of the GanglionCells. The thin lines enclosing the cells w and u represent the pericellular spaces ;the cells x and y show the earliest stages, w and s later stages, and k shows theultimate destruction of the whole of the ganglion-cell body, leaving nothing but thenucleus lying in an empty space. (Van Gieson.) EPILEPSY. 77 neuroglia tissue; clusters of an increased number of veryyoung and seemingly proliferating neuroglia cells are vis-ible in the vi
RM2AN2D8K–Introduction to structural and systematic botany, and vegetable physiology, : being a 5th and revedof the Botanical text-book, illustrated with over thirteen hundred woodcuts . nified anther of the same. 1001. Flower of a Salvia ; the calyx as well as the corollabilabiate. 1002. Magnified stamen of the same, with widely separated anther-cells, one ofwhich (a) is polliuiferous, the other (6) imperfect. EXOGENOUS OK DICOTYLEDONOUS PLANTS. 451 flowers often in one-sided scorpioid clusters (407). Calyx of fiveleafy and persistent sepals, more or less united at the base, regular.Corolla regular; th
RM2AX26XW–Annual program for the observance of Arbor day in the schools of Rhode Island . . 13. xd then, you see, in form we vary ;With saw-teeth these—ehn, apple, cherry.Maple and oak have edges lobed.The willow is in straight lines robed. Child—Will you spend each summer day,Little leaves, in work or play ? Leaves— Within our cells the air comes ting-ling, The sap and moisture with it ming-ling; Through tliese, we toil the tree tonourish. And, thus, you see itgrow and flourish. Our shade is sought by people weary;And nests for birds so sweet and cheery,Are often in our clusters hidden, So none may ent
RM2AM2CHA–American journal of pharmacy . As with crystal clusters are com-mon, particularly near the base of the style. Reticulated cells occurin the inner layers adjoining the endocarp. (4) Outer Endocarp [Fig. 7, F, Fig. p, If).—Owing to the deepwrinkles the thickness ot this coat is exceedingly variable. As in. End lep — k — - - X Fig- 9-—R^d Raspberry. Endocarp and seed in transverse section. End,endocarp consisting of If, longitudinall extended fibers, and qf, transversly ex-tended fibers ; S, testa consisting of ep, epidermis, p. parenchyma (nutritivelayer) and iep, inner epidermis ; N, hyaline la
RM2AWK7DR–The anatomist's vade mecum : a system of human anatomy . age, nearer the seat of ossification ; each simple cell has produced two,which are a little larger than the cells in figure a. t The same cartilage, still nearer the seat of ossification ; each single cellof B has given birth to four, five, or six cells, which form clusters. Theseclusters become larger towards the right of the figure, and their cells morenumerous and larger, t^oo of an inch, long diameter. DEVELOPMENT OF BONE. 7 cell producing four, or five, or six young; cells, a cluster is formed,containing from thirty to fifty cells.
RM2AN6B3X–Anatomy, physiology and hygiene for high schools . ucous membrane of the canal, as the gas-tric glands, or formseparate isolated struc-tures, as the liver. In structure, a glandconsists of a collectionof epithehal cells builtup in connective tissuearound a well or duct.The simplest gland ismerely a blind tube linedwith secreting cells. Itlooks like a well, thecells lying about the walllike the stones in the wallof a well. Many glandsconsist of clusters ofthese short blind tubesbranching out fromone another, all builtup by connective tissueinto a separate struc-ture with nerves andblood vessels
RM2AFY94T–. Flora of Syria, Palestine, and Sinai : from the Taurus to Ras Muhammas and from the Mediterranean sea to the Syrian desert. acute, oftenproduced beyond the middle of the limb — Amanus. 16. MESPILUS, L. Medlar. Calyx-lobes 5, leaf-like. Petals 5. Cells of ovary 5, 2-ovuled.Styles 5.. Fruit a drupe, crowned with umbilicate disk as broad asitself, surrounded with the calyx-lobes ; pyrenes 5, bony, 1-seeded —A somewhat thorny tree. M. Oermanica, L. 5 5 to 8. Leaves short-petioled oblong-elliptical, often denticulate, and acute. Flowers solitary, subsessileamong the leaf clusters; calyx-lobes lon
RM2AJGCKF–Hastings' Seeds : fall 1912 catalogue . e growth well set withfruits, all of which ripen very early in theseason. Fruits are of deep scarlet color,growing closely together in clusters of 5 to 8,all of medium size, averaging 2% inches indiameter. Smooth and solid, quite thickthrough and very free from ribs and cracksfor an early variety. Flesh deep red withsolid center and small seed cells; slightlyacid flavor. Pkt., 10c.;% oz., 15c; oz., 25c;% lb., 65c; lb., $2.00. Extra Early Wealthy This new tomato is a source of wealth tothe gardener who plants for early markets,hence its suggestive name. I
![. Handbook of the trees of the northern states and Canada east of the Rocky mountains. Photo-descriptive. in Oleaceae (p.. 455). e* Dryish drupe ; leaves simple and f Alternate ; flowers in crowded axillary clusters. Symplocaceae (i). 4.53 ). f- Opposite ; drupe 4-winged Styraeeae ( p. 4.54 ). e° Pod-like capsule; flowers bilabiate in conspicuous terminal panicles. Catalpa, in Bignoniaceae (p. 456).d Ovary inferior ; flowers perfect; corolla e Campanulate; stamens 10; anther cells o])ening by a teiminal pore; fruit a berry, Vaccinium, in Ericaceae (p. 452).e= Iotate : flowers in compound corym Stock Photo](https://c8.alamy.com/comp/2AFPR00/handbook-of-the-trees-of-the-northern-states-and-canada-east-of-the-rocky-mountains-photo-descriptive-in-oleaceae-p-455-e-dryish-drupe-leaves-simple-and-f-alternate-flowers-in-crowded-axillary-clusters-symplocaceae-i-453-f-opposite-drupe-4-winged-styraeeae-p-454-e-pod-like-capsule-flowers-bilabiate-in-conspicuous-terminal-panicles-catalpa-in-bignoniaceae-p-456d-ovary-inferior-flowers-perfect-corolla-e-campanulate-stamens-10-anther-cells-o-ening-by-a-teiminal-pore-fruit-a-berry-vaccinium-in-ericaceae-p-452e=-iotate-flowers-in-compound-corym-2AFPR00.jpg ". Handbook of the trees of the northern states and Canada east of the Rocky mountains. Photo-descriptive. in Oleaceae (p.. 455). e* Dryish drupe ; leaves simple and f Alternate ; flowers in crowded axillary clusters. Symplocaceae (i). 4.53 ). f- Opposite ; drupe 4-winged Styraeeae ( p. 4.54 ). e° Pod-like capsule; flowers bilabiate in conspicuous terminal panicles. Catalpa, in Bignoniaceae (p. 456).d Ovary inferior ; flowers perfect; corolla e Campanulate; stamens 10; anther cells o])ening by a teiminal pore; fruit a berry, Vaccinium, in Ericaceae (p. 452).e= Iotate : flowers in compound corym Stock Photo")
RM2AFPR00–. Handbook of the trees of the northern states and Canada east of the Rocky mountains. Photo-descriptive. in Oleaceae (p.. 455). e* Dryish drupe ; leaves simple and f Alternate ; flowers in crowded axillary clusters. Symplocaceae (i). 4.53 ). f- Opposite ; drupe 4-winged Styraeeae ( p. 4.54 ). e° Pod-like capsule; flowers bilabiate in conspicuous terminal panicles. Catalpa, in Bignoniaceae (p. 456).d Ovary inferior ; flowers perfect; corolla e Campanulate; stamens 10; anther cells o])ening by a teiminal pore; fruit a berry, Vaccinium, in Ericaceae (p. 452).e= Iotate : flowers in compound corym
RM2CDJEYD–. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . CORIANDER. 563 1. Epicarp. ^ The sharply polygonal cells, 15-30 //, contain crystalsand cmtal clusters of calcium oxalate also remains of chlorophyl grains. 2. The Hypodermal Cells, of which there are two or three layers,are somewhat larger than those of the epicarp, and in cross-section aretangentially elongated. 3. Parenchyma. Between the ribs this layer consists of large, iso-diametric, thin-walled cells, and in the ribs, of longitudinally elongated,.
RM2CDDMG3–. The elements of pathological histology with special reference to practical methods . ^ ^^ V ^^ j^ Fio. 22.—Soft Fibroma of the Skin, x 285. (Stained with hEematoxjlin and eosin.) The cells in these tumours may be unevenly distributed, so thatmore and less cellular portions alternate. They are usually elongatedor spindle-shaped, but round cells also occur, not uncommonly inlittle clusters, which then constitute the youngest spots or formativetissue of the tumour. (Edematous fibromata are those in which venous congestion hasresulted in extravasation of serum, and consequent softening andsepar
RM2CDJMEE–. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . nd are either empty or contain formless brown masses or else crjstal clusters of cal-cium oxalate. The stone cells are irregularin shape and have colorless walls more orless strongly thickened, in which branchingpores and concentric markings are conspicu-ous. They are distributed through the par-enchymatous ground tissue, being especiallynumerous in the inner layers, where theyform a nearly continuous coat one or morecells thick. 4. Compressed Cells in several layers lin
RM2CJ2WB0–. Quain's elements of anatomy . racemose compound glands (fig. 216, c) contain a multitude of VAEIETIES OF SECRETING GLANDS. 22r saccules, opening in clusters into the extremities of a branched tube,named the excretory duct. The saccules are rounded, pyiifonn orthimble-shaped. They are often rather filled than lined by secreting:cells ; they are arrano-ed in groups, round the commencing branches ofthe duct, into which they open (fig. 216, C, ii) ; or it might with equaltruth be said that the branches of the duct are distended into clusters ofsaccular dilatations. The ultimate branches of the d
![. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . -stal clusters are abundant, particularly in the inner layers. 4. The Endocarp consists of a la)-er of ])ar(nt]iia cells witli wallsso thin that they arc studied with difficulty, and is quite dilTerent fromthe sclerencliymatous endocarp of the currants. Spermoderm, Endosperm, and Embryo. The microscopic structure ofthe seed is practically the same as that of the currant seed. Floral Parts (Fig. 279). The remains of the floral jiarts are usuallvdeep brown, and can be stud Stock Photo](https://c8.alamy.com/comp/2CDM0MR/the-microscopy-of-vegetable-foods-with-special-reference-to-the-detection-of-adulteration-and-the-diagnosis-of-mixtures-stal-clusters-are-abundant-particularly-in-the-inner-layers-4-the-endocarp-consists-of-a-la-er-of-arnt-iia-cells-witli-wallsso-thin-that-they-arc-studied-with-difficulty-and-is-quite-dilterent-fromthe-sclerencliymatous-endocarp-of-the-currants-spermoderm-endosperm-and-embryo-the-microscopic-structure-ofthe-seed-is-practically-the-same-as-that-of-the-currant-seed-floral-parts-fig-279-the-remains-of-the-floral-jiarts-are-usuallvdeep-brown-and-can-be-stud-2CDM0MR.jpg ". The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . -stal clusters are abundant, particularly in the inner layers. 4. The Endocarp consists of a la)-er of ])ar(nt]iia cells witli wallsso thin that they arc studied with difficulty, and is quite dilTerent fromthe sclerencliymatous endocarp of the currants. Spermoderm, Endosperm, and Embryo. The microscopic structure ofthe seed is practically the same as that of the currant seed. Floral Parts (Fig. 279). The remains of the floral jiarts are usuallvdeep brown, and can be stud Stock Photo")
RM2CDM0MR–. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . -stal clusters are abundant, particularly in the inner layers. 4. The Endocarp consists of a la)-er of ])ar(nt]iia cells witli wallsso thin that they arc studied with difficulty, and is quite dilTerent fromthe sclerencliymatous endocarp of the currants. Spermoderm, Endosperm, and Embryo. The microscopic structure ofthe seed is practically the same as that of the currant seed. Floral Parts (Fig. 279). The remains of the floral jiarts are usuallvdeep brown, and can be stud
RM2CEE431–. Text-book of anatomy and physiology for nurses. ung has two lobes. Note.—The left lung is narrowerthan the right and does not cover theapex of the heart, otherwise it would beexposed to the motion of the heartbeat. The lung substance consists ofbranches of the bronchi and their divi-sions down to the bronchioles, and theFig. 150.—Clusters of Am- spaces terminating in air-cells. These CELLS (Holden, from KoUiker). ? structures are surrounded by blood-ves-sels, nerves, and lymphatics, grouped together in lobules, supportedby fine fibro-elastic connective tissue and wrapped in pleura. Each bron
RM2CDDRE7–. The causes and course of organic evolution; . ration over a water bath the dulcite separates ascrystals. In contrast to the above, relatively large quantities of eachcan be produced in plant cells that show no marked indicationof chemical reactions proceeding; that do not evolve extraamounts of heat, even when, as in large flower clusters thatare actively metabolizing, a few degrees of rise in temperature Relation of Inorganic to Organic Bodies 67 is carefully recorded; and that show, even by fine galvanometricrecords, only moderate electric disturbances. So the onlyexplanation, or mode of e
RM2CDM8YD–. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . Fig. 245. Acorn. Epicarpin siirface view. X160. (MOELLER.) Fig. 246. Acorn. Brown parcruhyma of [)ericarp.X160. (MOELLER.) cell-contents are occasional crystal clusters of calcium oxalate. Throughthis tissue pass the fibro-vascular bundles 5. Inner Mesocarp. A spongy parenchyma (Fig. 246) of cells arrangedend to end in longitudinal rows forms a characteristic tissue. In crosssection these cells are round, in tangential section elongated wiilinumerous connecting arms. The
RM2CDD0PM–. Physiology, experimental and descriptive . Fig. 39. The Trachea and Bronchial Tubes, ShowingTwo Clusters {Alveoli) of Air Vesicles. 106 ORGANS OF THE THOBAX. around and between the air sacs. These capillaries receivetheir blood from the pulmonary artery, and return it to theheart by the pulmonary veins.. 1, Pulmonary Orifice 2. Aortic Orifice 3. Left Auriculo-Ventricular Orifice 4. Right Auriculo-Ventricular Orifice Fig. 40. Front View of the Thorax. The Ribs and Sternum are Represented inRelation to the Lungs, Heart, and other internal Organs. CILIATED CELLS. 107 ? The air vesicles, with th
RM2CH2N6G–. Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean . -. GEOLOGY—DESCRIPTION OF FOSSILS. 73 and striate, and having fine, undulated, transverse lines ; mouth small, oblique ; upper part ofthe tube oblique, deeply indented or Balaniform, and coarsely striated longitudinally. Length8 inches, Locality.—Monterey county, California.—A. S. Taylor. Growing in clusters like Balani.No sutures, indicating separate valves ; cells very thin plates, convex surface downwards. PANDORA, lam. Pandora bilira
RM2CEH2F3–. How to know wild fruits; a guide to plants when not in flower by means of fruit and leaf. FBUITS INDIAN CURRANT. CORAL BERRY Symphoricarpos Symphoricarpos. Symphoricarpos vulgarisHoneysuckle Family Fruit. — The fruit varies in ripening fromcoral-red to reddish purple. It is small, ovoid-globose, and bears the calyx teeth at the sum-mit. The skin is thin; the flesh is dry, mealy,and insipid; and, although there are four cells,the seeds are but two in number, two ovulesbeing abortive. The seeds are white and hard.The berries grow in clusters from the axils ofmost of the leaves. The fruits pers
RM2CE2P4J–. Plants and their uses; an introduction to botany . all our nativeferns, remains mostly underground as a more or less horizontalrhizome. A considerable amount of starch stored over the winterin the fundamental tissues of this perennial organ, accounts for therapid unfolding of the leaves in spring. Some of the leaves areentirely vegetative; other leaves bear numerous minute sporangiain clusters upon the back, each cluster being covered by a shield-like out-growth (Figs. 170, S-5). A peculiar part of the sporangiumis a ring of thickened cells running along the back (Gc), which when 540 LIFE-HI
RM2CE49EH–. Insect pests of farm, garden and orchard . e difficult to combat. Life History.—The winter is passed in the pupal state, thepupffi being about one-halfinch long and being foundin cells one-quarter to one-half an inch below the sur-face. The moths emergein the spring and thefemales lay their eggs ongrass in clusters of fifty ormore, each mass beingcovered with the mouse-colored hairs from the bodyof the female. The eggshatch in about ten daysand the caterpillars arefound during May andJune. The complete lifehistory of the insect hasnot been carefully followed,but it seems probable thatthere a
RM2CD8RNN–. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . Fig. i6g. Hemp. Calyx in surface view, aep outer epidermis with h hair containingcy cystolith, and d glandular hair; mes mesophyl containing crystals; tep inner epi-dermis. X160. (WiNTON.) cells are about 10 fi in diameter and contain crystal clusters of calciumoxalate. 2l6 OIL SEEDS. 3. The Itmer Epidermis (iep). Cells with way outline, thin-walledhairs, and stomata fomi the inner layer. Pericarp (Figs. 170 and 171). i. Epicarp (ep). This layer consistsof more or less
RM2CDGMXN–. Allen's catalogue : choicest strawberry plants and other small fruits, vegetable seeds etc . Top, WTUU Otob*. NEW CORELESS.—A perfect globe-shaped ofmedium to larse size tomatoes of recent introduction.This new shape is preferred by many growers ; it is al-most round, being about the same diameter each way.There is little or no depression at the stem end, mak-ing it ver.v economical for all uses. It is very produc-tive, and the fruit is borne in clusters at close inter-vals all along the vines. Fine for slicing, the seeds cells Ijeing surrounded by bright red. heav.v. meaty anddelicious fles
RM2CRJ8PJ–. A practical treatise on medical diagnosis for students and physicians . iortals, it may enter the tissue through abrasions or the hair-follicles. Morphology. In cover-glass preparations they appear as small, roundbodies scattered among the j)us-cells, rarely within them, single, in pairsor in clusters. Thev stain readily with the basic aniline dyes. (SeeFig. 275.) Fig. 275.. m ^ci ■^■r^:i Pus with staphylococcus. X 800. (FLrGGE.) 2. Staphylococcus Pyogenes Albus. It is also found in acute abscesses,but less often than the aureus, and is less virulent. It is morpholog-ically identical with th
RM2CRHJYR–. Radiography, X-ray therapeutics and radium therapy . 9SL ..v» ^-v. PLATE LVL—Changes observed in Tumours which have been treated hy Radiations. A, Low-power view, much fibrous tissue with many young connective-tissue cells and a large numberof black dots representing small round inflammatory cells. An interpapillary process of squamous cellsis seen on the upper right side. Below are seen numerous large cells in small clusters surrounded byfibrous tissue. B, Collection of large irregular cells embedded in hyaline tissue (fibrous), many of the cells areof the typical squamous type. There are m
RM2CDDAPX–. The rusts of Australia, their structure, nature, and classification . R. 5.Brain, Go; SWEET BRIAR, RASPBERRY, AND FLAX RUSTS. 240 Explanation of Plates. Fig. PLATE J. AECIDIUM on DANTHONIA. 39. Leaves with aecidia in dense clusters 40. Cluster of aecidia on leaf ... 41. Section of aecidium showing peridial wall and spores in chains 42. Chain of aecidiospores 43. Single spore detached and more or less rounded 44. Pseudoperidial cells seen from the surface ... nat size x 15 X 50 ... X 1000 ... X 1000 ... X 550 PLATE J. 42 C. C£rMlcbank,Dd 44
![. Elements of plant anatomy;. Botany -- Anatomy. 46 ELEMENTS OF PLANT ANATOMY. in length, are not strikingly different. In this respect they form a single tissue, called "parenchyma^ a name applied to cells nearly or quite isodiametric. The next change is one which gives rise to prosenchyma^ or cells with one long axis, and the process may be described as follows. A cross-section made just below the stem apex shows clusters of cells differing from the others by their shorter radial and tangential diameters. A long section through one of these clusters shows that these cells have one long Stock Photo](https://c8.alamy.com/comp/RCERKR/elements-of-plant-anatomy-botany-anatomy-46-elements-of-plant-anatomy-in-length-are-not-strikingly-different-in-this-respect-they-form-a-single-tissue-called-quotparenchyma-a-name-applied-to-cells-nearly-or-quite-isodiametric-the-next-change-is-one-which-gives-rise-to-prosenchyma-or-cells-with-one-long-axis-and-the-process-may-be-described-as-follows-a-cross-section-made-just-below-the-stem-apex-shows-clusters-of-cells-differing-from-the-others-by-their-shorter-radial-and-tangential-diameters-a-long-section-through-one-of-these-clusters-shows-that-these-cells-have-one-long-RCERKR.jpg ". Elements of plant anatomy;. Botany -- Anatomy. 46 ELEMENTS OF PLANT ANATOMY. in length, are not strikingly different. In this respect they form a single tissue, called "parenchyma^ a name applied to cells nearly or quite isodiametric. The next change is one which gives rise to prosenchyma^ or cells with one long axis, and the process may be described as follows. A cross-section made just below the stem apex shows clusters of cells differing from the others by their shorter radial and tangential diameters. A long section through one of these clusters shows that these cells have one long Stock Photo")
RMRCERKR–. Elements of plant anatomy;. Botany -- Anatomy. 46 ELEMENTS OF PLANT ANATOMY. in length, are not strikingly different. In this respect they form a single tissue, called "parenchyma^ a name applied to cells nearly or quite isodiametric. The next change is one which gives rise to prosenchyma^ or cells with one long axis, and the process may be described as follows. A cross-section made just below the stem apex shows clusters of cells differing from the others by their shorter radial and tangential diameters. A long section through one of these clusters shows that these cells have one long
RMREK654–. The classification of flowering plants. Plants. ACANTHACEAE 545 genera; they are found generally in the epidermal cells of the leaf and stem and their form is characteristic of single genera or tribes. The most frequent type of inflorescence is the cymose, namely dichasial passing into monochasial in the higher branching; it is often in the form of short axillary clusters. Spicate and racemose inflorescences are also frequent. Bracts and bracteoles are generally well developed and often brightly coloured, adding to the attractiveness of the inflorescence.. Fig. 253. Acanthus mollis. A. Flowe
RMRHR6CP–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 242 T. H. MORGAN. normal spermatogenesis had started and all the stages, from the spermatogonia to mature spermatozoa, could be observed in the slides. The spermatozoa finally degenerate and this is probably due to the lack of an outlet in the organ. New tubules are aris- ing near the surface of the section. The clusters of luteal cells, however, have apparently disappeared, their place being taken by the ordinary connective tissue and an enormous number of small lymphocytes which are arising in the intertubular tissue at th
RMRN596M–. The anatomy of woody plants. Botany -- Anatomy. 296 THE ANATOMY OF WOODY PLANTS nests of cells which are duplicated by similar structures in the cortex. The inner surface of the cylinder of xylem shows clusters of primary wood which sharply contrast with the secondary region by the irregularity of the arrangement of the elements and the absence of rays. Fig. 211 illustrates a portion of the cylinder more highly magnified, and with the greater enlargement the distinct and mesarch character of the primary region becomes apparent. The secondary wood is characterized both by its regularly radial
RMREF851–. Comparative anatomy. Anatomy, Comparative. THE ENDOCRINAL ORGANS 461 thymus tissue to adenoid tissue makes it probable that it is a lymph- forming organ, whatever other functions it may have. The most striking histological characteristic of the thymus is the presence of thymic or Hassall's corpuscles, relatively small clusters of concentrically arranged epithelial cells, usually assumed to be degenerate and non-functional. Physiology. The endocrine function of the thymus is doubtful, since removal of the gland is not followed by disturbances of normal. Fig. 382.—A portion of a section of the
RMREE4BA–. Comparative anatomy. Anatomy, Comparative. THE DIGESTIVE SYSTEM 327 centrated near the lumen of the acinus. Secretions pass from the lumina of the glands into fine intercalated ducts, and from these into secretory ducts like those of the parotid. Scattered irregularly among the acini of the pancreas are clusters of lightly-staining cells. The area of these clusters in section is considerably greater than that of a single acinus. These are the islands of Langerhans, endocrinal organs which secrete insulin. Development of the Pancreas. Like the Hver, the pancreas develops from the endoderm. It
RMREF74P–. Comparative anatomy. Anatomy, Comparative. THE SENSE ORGANS 571 bottom of the groove become differentiated into clusters of neuromast cells surrounded by indifferent supporting cells. Mucus cells also develop, and fill the canal with their secretions. Nervous connexions are second- ary, and are formed by neurites from neural crest cells, usually of the vagus and facial ganglia, but sometimes of the glossopharyngeal ganglion. MUSCLE SPINDLES Muscle spindles form a special set of sensory nerve terminations upon muscle fibers, by means of which we are able to sense the degree of contraction of
RMRMP5KF–. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 72 Zoological Society:— by Milne-Edwards, in the lower part or stem being coriaceous and destitute of any spicules, and in the upper part being spiculose, and furnished with short clusters of polype-cells, giving it much the ap- pearance of the Fungi called Morchella and Helvetia. MORCHELLANA. The coral subclavate, coriaceous, subcalcareous, and loosely cellular. within; the stem subcylindrical, elongate, hard, coriaceous, and mi- nutely granular on the surface.. Please note t
RMREF4P8–. A compendium of general botany. Plants. Fig. 9.—Cells from the stem of Trades- Fig. 10.—Crystal-bearing cells of-4escM^«» cantiazebrina. (After Haberlandt.) Hippocastanum. (After Haberlandt.) The first more exact studies of these crystals were made by HoLZNER.' The perfect crystals belong either to the tetragonal or the clinorhombic system, as do also the artificially produced crystals, this depending upon whether they contain one or three molecules of water of crystallization. The clusters are aggregates of usually not very small crystal individuals around a nucleus of protein > Flora, 1
RMREF741–. Comparative anatomy. Anatomy, Comparative. 574 COMPARATIVE ANATOMY mouth is not nervous, as was once assumed, but glandular. A chemical sense, however, amphioxus indisputably has, since it responds to chemical stimulation. Neurosensory cells occur in clusters on the oral cirri and scattered over the surface of the body, and these may be assumed to be the chemoreceptors. In cyclostomes, as in all the higher vertebrates, are paired olfactory pits innervated by olfactory nerves. The erroneous notion that cyclo- stomes are monorhinal is based upon the fact that the olfactory pits open into the m
RMRHN6YJ–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 202 PAUL E. FELL Gametogenesis and embryonic development in Haliclona loosanoffi are virtually identical to these processes in Haliclona ecbasis which has been studied in detail (Fell, 1969, 1970). The sperm develop within spermatic cysts which are scattered throughout the endosome. Each cyst is made up of one or more clusters of spermatogenic cells surrounded by a layer of pinacocytes. All of the cells of a cluster are at the same stage of development, but different clusters within the same cyst may be at different stages.
RMRHM2CA–. Biological structure and function; proceedings. Biochemistry; Cytology. m « 6 Fig. 6. Micrograph of parts of adjacLiit cells in tapctal layer fourul in anthers of Saiiitpaidia ioimtha. The cytoplasms of the fully differentiated plant cells are richly supplied with elements of the ER. In a way peculiar to these cells, the ER shows some of the features which characterize it in animal cells. Some of the cisternae are lamellar and arranged in groups or clusters. These show the most pronounced association with RNP particles. As in animal cells, these particles show some tendency to form miniature
RMRE2FWY–. Fundamentals of botany. Botany. 2l8 STRUCTURE AND LIFE HISTORIES early stages of development the sporophyte ceases to grow at the apex, and elongates only by the formation and enlargement of new cells just above the foot {intercalary growth). Around the base of the sporophyte there develops from the tissue of the gametophyte a sheath, but, in contrast with the mosses, no seta is formed. The appearance of the sporophytes, as they appear in clusters, has been aptly likened to tufts of delicate blades of grass (Fig. 156). Spores are formed from the cylindrical archesporium, between outer and in
RMRHMGJP–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. TESTICULAR CYCLE OF BRITTLE-STAR 331 spermatogonia. Phase FIGURE 2. Monthly variations in the number of the spermatogenic cells and in the area of the amoeboid cell clusters in Amphipholis kochii. Changes of the sea water temperature at the collection site are also indicated. The numbers indicated over the upper graph show the number of the animals used each month. Average ± standard error. Phase 2: November to February. Spermatogenesis recommences, but the number of the spermatozoa is still very small. The clusters of the a
RMREYTAW–. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. 104 DIVISION I.âGENERAL MORPHOLOGY. mentioned also the envelope-cells on the spore-clusters of Urocystis, which will be described in Chapter V, but not the germ-tubes which appear inside the ascus in Sphaeria praecox, and which were described by Tulasne ^ as filiform appendages. We have already spoken, in concurrence with Zopf's views, of the physiological import of the gelatinous appendages as organs which may serve to attach the asco- spores to one another and to th
RMRE1CDK–. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. 4x8 Catarrhal Inflammation capsules of the latter are distinct. It is also readily taken up by the leukocytes, and may so resemble the gonococcus; and it is not always easy, perhaps not always possible, to distinguish it from the Diplococcus intracellularis meningitidis. Morphology.—^The organism is spheric or slightly ovoid. It may occur singly, though it usually appears in pairs or clusters. Large numbers are enclosed in the leukocytes or other cells.
![. Comparative anatomy. Anatomy, Comparative. 452 COMPARATIVE ANATOMY Histology. An adrenal has two kinds of tissue, an outer yellowish cortex and an inner brownish medulla. The cortex is subdivided into three layers, an outer glomerular layer composed of rounded clusters of epithelial cells, a middle fasciculate layer of rounded cells arranged in cords perpendicular to the surface, and an innermost reticular layer in which the cellular cords unite in a network. The central or medullary portion of the adrenal is characterized by relatively large "chromaffin" cells, so-called because t Stock Photo](https://c8.alamy.com/comp/REF862/comparative-anatomy-anatomy-comparative-452-comparative-anatomy-histology-an-adrenal-has-two-kinds-of-tissue-an-outer-yellowish-cortex-and-an-inner-brownish-medulla-the-cortex-is-subdivided-into-three-layers-an-outer-glomerular-layer-composed-of-rounded-clusters-of-epithelial-cells-a-middle-fasciculate-layer-of-rounded-cells-arranged-in-cords-perpendicular-to-the-surface-and-an-innermost-reticular-layer-in-which-the-cellular-cords-unite-in-a-network-the-central-or-medullary-portion-of-the-adrenal-is-characterized-by-relatively-large-quotchromaffinquot-cells-so-called-because-t-REF862.jpg ". Comparative anatomy. Anatomy, Comparative. 452 COMPARATIVE ANATOMY Histology. An adrenal has two kinds of tissue, an outer yellowish cortex and an inner brownish medulla. The cortex is subdivided into three layers, an outer glomerular layer composed of rounded clusters of epithelial cells, a middle fasciculate layer of rounded cells arranged in cords perpendicular to the surface, and an innermost reticular layer in which the cellular cords unite in a network. The central or medullary portion of the adrenal is characterized by relatively large "chromaffin" cells, so-called because t Stock Photo")
RMREF862–. Comparative anatomy. Anatomy, Comparative. 452 COMPARATIVE ANATOMY Histology. An adrenal has two kinds of tissue, an outer yellowish cortex and an inner brownish medulla. The cortex is subdivided into three layers, an outer glomerular layer composed of rounded clusters of epithelial cells, a middle fasciculate layer of rounded cells arranged in cords perpendicular to the surface, and an innermost reticular layer in which the cellular cords unite in a network. The central or medullary portion of the adrenal is characterized by relatively large "chromaffin" cells, so-called because t
RMRE4H22–. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. Pathogenesis 401 sules of the latter are distinct. It is also readily taken up by the leukocytes, and may so resemble the gonococcus; and it is not al- ways easy, perhaps not always possible, to distinguish it from the Diplococcus intracellularis meningitidis. Morphology.—The organism is spheric or slightly ovoid, may occur singly, though usually appears in pairs or clusters. Large numbers are enclosed in the leukocytes or other cells. The spheric organi
RMREFKDD–. Commercial poultry raising; a thoroughly practical and complete reference work for the amateur, fancier or general farmer, especially adapted to the commercial poultryman. Poultry. 340 COMMERCIAL POULTRY RAISING breeds and with different specimens, and there seems to be no basis for an approximation. There may be a dozen cells in a litter, or five dozen, and in rare cases, such as the hens that have attained wonderful records at egg-laying contests, fowls will con- tinue to lay almost without cessation, and continue to do so for a couple of years. Ordinarily, between clusters there is a peri
RMRPER6K–. American dairying : a manual for butter and cheese makers. Dairying; Butter; Cheese. 14-2 American Dairying. quently in clusters, peeling off some of the membrane of the follicle with them, as shown in figures 19 and 20, which 2.TQ fac similes of the first milking of the cow whose udder has just been described. They were drawn by the aid of a camera and accurately engraved; they show some large and many irregular pieces of membrane, with more or less cells attached, which,. Fig. iq. COLUSTRUM. from the feverish condition of the bag at that season, sloughed off with the cells before they full
RMRJ5KFT–. Chordate anatomy. Chordata; Anatomy, Comparative. 398 CHORDATE ANATOMY A sense organ of the lateral line consists of a cluster of pear-shaped hair cells, each of which is connected with a branch of the lateral-line nerve. Usually the cluster of sense cells is encircled by a ring of columnar epi- thelial cells. The sensory cells of neuromasts, unlike those of taste-buds, do not extend to the base of the epithelium. It is generally assumed that neuromasts have evolved from clusters of neurosensory cells like those of lower invertebrates. Similar clusters occur in the oral tentacles of Amphioxu
RMRDXR45–. Plant life, considered with special references to form and function. Plant physiology. VEGETATIVE HEP ROD VCTION. 251 the sporangia burst, or are moist and slirl<y, adliering to each other in larger or smaller clusters (fig. 264). Sometimes, as in orchids and nn'lkweeds, they are all held together in one mass by the remnants of the mother cells in which they were formed, and are attached to a part of the tissue of the anther which carries the massas a stalk or handle ffigs. 272,273). Dry spores are usually j,,,, ,^^ ^,,,„^^ ^^^^^^^^ ^^ ^,, adapted to distribution by w,nd ; TS^i^^,S^:'^^
![. [Catalogue]. Nursery stock Kentucky Louisville Catalogs; Nurseries (Horticulture) Kentucky Louisville Catalogs; Plants, Ornamental Catalogs; Flowers Catalogs; Trees Seedlings Catalogs; Shrubs Catalogs. Water Hyacinth. Eichhornia Crassipes Major, (Pontederia.) (THE WATER HYACINTH.) I The leaves of this charming plant are borne in curious swol- len stems, which at first sight appear like those of a pitcher plant. On examination these stems prove to be filled with delicate, spongy air-cells. It Is the nature of this plant to fioat around on the water,its large clusters of hairy roots hanging do Stock Photo](https://c8.alamy.com/comp/RF7KFH/catalogue-nursery-stock-kentucky-louisville-catalogs-nurseries-horticulture-kentucky-louisville-catalogs-plants-ornamental-catalogs-flowers-catalogs-trees-seedlings-catalogs-shrubs-catalogs-water-hyacinth-eichhornia-crassipes-major-pontederia-the-water-hyacinth-i-the-leaves-of-this-charming-plant-are-borne-in-curious-swol-len-stems-which-at-first-sight-appear-like-those-of-a-pitcher-plant-on-examination-these-stems-prove-to-be-filled-with-delicate-spongy-air-cells-it-is-the-nature-of-this-plant-to-fioat-around-on-the-waterits-large-clusters-of-hairy-roots-hanging-do-RF7KFH.jpg ". [Catalogue]. Nursery stock Kentucky Louisville Catalogs; Nurseries (Horticulture) Kentucky Louisville Catalogs; Plants, Ornamental Catalogs; Flowers Catalogs; Trees Seedlings Catalogs; Shrubs Catalogs. Water Hyacinth. Eichhornia Crassipes Major, (Pontederia.) (THE WATER HYACINTH.) I The leaves of this charming plant are borne in curious swol- len stems, which at first sight appear like those of a pitcher plant. On examination these stems prove to be filled with delicate, spongy air-cells. It Is the nature of this plant to fioat around on the water,its large clusters of hairy roots hanging do Stock Photo")
RMRF7KFH–. [Catalogue]. Nursery stock Kentucky Louisville Catalogs; Nurseries (Horticulture) Kentucky Louisville Catalogs; Plants, Ornamental Catalogs; Flowers Catalogs; Trees Seedlings Catalogs; Shrubs Catalogs. Water Hyacinth. Eichhornia Crassipes Major, (Pontederia.) (THE WATER HYACINTH.) I The leaves of this charming plant are borne in curious swol- len stems, which at first sight appear like those of a pitcher plant. On examination these stems prove to be filled with delicate, spongy air-cells. It Is the nature of this plant to fioat around on the water,its large clusters of hairy roots hanging do
RMRPWMFM–. The algae. Algae. Chamaesiphonales This order, which is a very small one, consists of attached uni- cells which occur either singly or aggregated together into groups. They differ from the preceding group in that reproduction is by means of endospores (gonidia). Chamaesiphonaceae: Entopkysalts {ento, within; physalts, httle bladder). Fig. 164 The cells of the sole genus in the family are epiphytic, solitary or arranged in dense clusters on other fresh water or marine plants. The cells are more or less rigid, vary much in shape and are attached at the base by down-growing filaments. In a cush
RMRDYPAD–. Milk. Milk. 60 MILK This mixture of protoplasm and chromatin breaks up further into fragments (corpuscles of Nissen). These fragments may attach themselves to fat globules and then take the shape of hel- mets, caps, or sickles. Besides organized cells, small structureless particles are fre- quently observed, which are readily stained with anilin dyes. These particles may form aggregations of considerable size, large enough to form emboli in the alveoli (Fig. 23). Later calcium and magnesium salts crystallize on these clusters and give a radi- ated appearance. These bodies are clearly degener
RMRDG2N2–. The natural history of plants. Botany. BUBIACJEM. 317 In Bertiem, of doubtful place, the flowers have an ovary with two multiovulate cells, a calyx with short teeth or none and a corolla with five contorted lobes. Sometimes one of the latter becomes quite covered and another covering by its two margins. The introrse anthers are surmounted by a pointed apicule of the connective. But the ovules are borne on an enlarged placenta, furnished with a rather long foot (like that of some Oldenlandiece), and the flowers are grouped in cymes and these often in pendent clusters. They are trees or shrubs
Search Results for Clusters of cells Stock Photos and Images (398)
Page 3 of 4